← The evidence ledger
Evidence row 1532275
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://instructional-decision-engine-x402.vercel.app/research/map-source-audit
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 9d2b78cb1ee5fb977c415681bc92f4c28856e11bac24c0f00b865ece1a4b5586
- Leaf
- 0x6d950d1668e146ef6cc035d8bd7d8ef1a8fd23d0657152a2d0d507e9871b303c
What was observed
{
"endpoints": [
[
"x402",
"https://instructional-decision-engine-x402.vercel.app/research/map-source-audit"
]
],
"name": "instructional-decision-engine-x402.vercel.app/research/map-source-audit",
"owner_address": "0x6b62673ccbe35ff0dc68490c7ca576334e0d607e",
"raw": {
"accepts": [
{
"amount": "150000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0x6B62673cCbe35ff0dc68490c7Ca576334e0D607e",
"scheme": "exact"
}
],
"description": "Audit up to eight GIS-layer manifests for missing dependencies, CRS mismatches, boundary vintages, join uniqueness, missing values and geometry issues. No uploads, map files or network fetches.",
"extensions": {
"bazaar": {
"info": {
"input": {
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"layers": [
{
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"checksumVerified": true,
"epsg": 0,
"format": "shapefile",
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"joinKey": "name",
"matchedRows": 18,
"missingComponents": 1,
"missingValues": 2,
"present": true,
"rows": 20,
"uniqueJoinKeys": 19
}
],
"projectBoundaryYear": 2020,
"projectEpsg": 4326
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
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"properties": {
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"properties": {
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},
"epsg": {
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},
"format": {
"enum": [
"csv",
"geojson",
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"geopackage",
"remote"
],
"type": "string"
},
"invalidGeometries": {
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"present": {
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"rows": {
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},
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},
"required": [
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"epsg",
"boundaryYear",
"rows",
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"matchedRows",
"missingValues",
"invalidGeometries",
"joinKey"
],
"type": "object"
},
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},
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},
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},
"required": [
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"projectBoundaryYear",
"layers"
],
"type": "object"
},
"bodyType": {
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"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
}
},
"required": [
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],
"type": "object"
}
}
},
"lastUpdated": "2026-10-31T00:09:28.289Z",
"quality": {
"l30DaysTotalCalls": 1,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-10-31T00:09:28.084Z"
},
"resource": "https://instructional-decision-engine-x402.vercel.app/research/map-source-audit",
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Audit up to eight GIS-layer manifests for missing dependencies, CRS mismatches, boundary vintages, join uniqueness, missing values and geometry issues. No uploads, map files or network fetches."
}What the leaf hashes
{"body":"9d2b78cb1ee5fb977c415681bc92f4c28856e11bac24c0f00b865ece1a4b5586","id":1532275,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793473475896430,"prev":null,"subject":"x402_bazaar:https://instructional-decision-engine-x402.vercel.app/research/map-source-audit","subject_kind":"source_record"}Proof
Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (246033 rows).
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- Day root
- 0x24463725d1c0d9894bd6123691d532547aaa79f0762c0e45aa6a68acf1fd71ab
- Chained
- 0x7d4824ff313dee7252a46f9d5c37b452851deb6c9f24a40c2f74ee0e53c82980
- Published
- On Arc Testnet, block 70093156: 0xedb7b832f4ebf6781b5ecd2ed241c435b862f4d3761541fa31adc1831b8c44a0